Python3中字符串编号列表的排序？

此代码按如下方式对列表进行排序：

test_list = [['10','fff'], ['11','dfhg'], ['3','zszszs'], ['4','ll'], ['18','kds']]
test_list.sort()

for line in test_list:
    print(line)

['10', 'fff']
['11', 'dfhg']
['18', 'kds']
['3', 'zszszs']
['4', 'll']

但我需要按如下数字顺序排序：

test_list = [['10','fff'], ['11','dfhg'], ['3','zszszs'], ['4','ll'], ['18','kds']]
test_list.sort()

for line in test_list:
    print(line)

['10', 'fff']
['11', 'dfhg']
['18', 'kds']
['3', 'zszszs']
['4', 'll']

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我已经尝试了.sorted函数和itemgetter，但这些都不起作用。

使用sort的键参数将提供自定义排序

['3', 'zszszs']
['4', 'll']
['10', 'fff']
['11', 'dfhg']
['18', 'kds']

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这回答了你的问题吗？